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Name:
Cardiospermum coloradensis (Balloon Vine)
Age: Eocene
Formation: Green River Formation
Location: Near Bonanza, Utah
Size: Plate is 2.7" X 3.5"
This is a very fine double specimen of Cardiospermum coloradensis, Balloon Vine, from the Green River Formation of Utah. Living members of Cardiospermum are herbaceous, or woody vines. The fossil species appear to represent shrubs rather than vines. These leaves are quite nice for the type and exhibits very good detail. The large-lobed leaves have great color and contrast and are well centered on the natural plate of shale. This is a very distinct multiple specimen of this strange-looking leaf from the Eocene.
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